3 serial sensors, 1 sdi-12 sensors – Campbell Scientific CR200/CR200X-series Dataloggers User Manual
Page 59
Section 4. Sensor Support
4.7.3 Serial Sensors
4.7.3.1 SDI-12 Sensors
The SDI-12 standard allows cable lengths of up to 200 feet. Campbell Scientific
does not recommend SDI-12 sensor lead lengths greater than 200 feet; however,
longer lead lengths can sometimes be accommodated by increasing the wire
gage and/or powering the sensor with a second 12 vdc power supply placed near
the sensor.
47
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